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//All rights reserved.
//
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//permitted provided that the following conditions are met:
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//conditions and the following disclaimer.
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//of conditions and the following disclaimer in the documentation and/or other materials 
//provided with the distribution.
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//endorse or promote products derived from this software without specific prior written 
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Serialization;
using System.Xml;
using System.IO;

namespace Amazon.Services.EC2
{
    public partial class Image
    {
        #region Static Methods
        public static Image[] GetImages(AmazonAccount account)
        {
            return Image.GetImages(account, false);
        }

        public static Image[] GetImages(AmazonAccount account, Boolean includePublic)
        {
            List<Image> images = new List<Image>();

            // set up the parameters for the request
            Dictionary<String, String> parameters = new Dictionary<String, String>();
            if (!includePublic)
                parameters.Add("Owner.1", "self");
            parameters.Add("Action", "DescribeImages");

            // make QUERY service Request
            EC2QueryService client = new EC2QueryService(account);
            Response response = client.Invoke(parameters, null);
            if (response.Status != System.Net.HttpStatusCode.OK)
                throw new AmazonException("Unable to get listing of images", response.Status);

            // just some basic reader settings; mainly to prevents whitespace from being read
            XmlReaderSettings settings = new XmlReaderSettings();
            settings.IgnoreComments = true;
            settings.IgnoreWhitespace = true;

            // tear is apart into the instances and return the list
            using (XmlReader reader = XmlTextReader.Create(new StringReader(response.Body), settings))
            {
                while (reader.ReadToFollowing("imagesSet"))
                {
                    reader.ReadStartElement("imagesSet");
                    {
                        while (reader.Name.Equals("item", StringComparison.OrdinalIgnoreCase) && reader.NodeType != XmlNodeType.EndElement)
                        {
                            Image image = new Image(client);
                            (image as IXmlSerializable).ReadXml(reader);
                            images.Add(image);
                        }
                    }
                    reader.ReadEndElement();
                }
            }

            return images.ToArray();
        }
        #endregion
    }
}
